Our team

Meet our clinical team.

Süalp Tansan, MD
Medical Oncologist

Medical oncologist with more than three decades of clinical experience spanning academic oncology in the United States and independent oncology practice in Istanbul. Founder of Tansan Oncology, established in 1995. Clinical interests focus on precision oncology, molecularly informed treatment selection, targeted therapy, immunotherapy, and the management of complex and advanced cancers. Particular emphasis is placed on reassessing tumor biology over the course of disease and integrating clinically meaningful molecular findings into treatment decisions.

Education and Expertise
1983 Medical Doctor, Istanbul University Faculty of Medicine, Istanbul
1986–1989 Internal Medicine Residency Training, Carney Hospital, Boston, Massachusetts, USA
1989–1991 Medical Oncology Advanced Training, Boston University Medical Center, Boston, Massachusetts, USA

Board Certification
1991 American Board – Medical Oncology certification

Academic and Clinical Responsibilities

1991 Assistant Professor of Medicine (Tenure Track), Boston University

1991–1995 Director of Chemotherapy Clinic, Boston University; postgraduate medical education and clinical oncology roles.

1995–Present Founder and Medical Oncology Specialist, Tansan Oncology, Istanbul

Awards and Achievements

  • Distinguished Physician Award, Boston University School of Medicine / affiliated hospital, 1991–1995
  • 98th percentile on the American Board of Internal Medicine exam.

Current Clinical Focus Areas

  •  Precision oncology and personalized systemic treatment strategies.
  •  Molecular and genomic profiling in solid tumors
  •  Interpretation of therapeutically significant biomarkers and resistance mechanisms.
  •  Targeted therapies and immunotherapy
  •  Complex and advanced-stage cancers after multiple treatments
  •  In disease progression, re-evaluation with tissue profiling and fluid biopsy should be performed when appropriate.
  •  Evaluating new treatment approaches alongside established treatment standards.

Professional Competencies

  • Medical oncology
  • • Systemic anticancer therapy
  • Precision oncology
  • Molecular tumor profiling
  • Targeted therapies
  • Cancer immunotherapy
  • Clinical interpretation of liquid biopsy
  • Advanced cancer treatment strategy
DOCTORS
Gülhan İpek Deniz, MD
Medical Oncology Specialist
  • Education
    • Faculty of Medicine: Dicle University
    • Internal Medicine: Istanbul Training and Research Hospital
    • Medical Oncology Subspecialty: Istanbul University Cerrahpaşa Faculty of Medicine
  • Work Experience
    • Mardin Nusaybin Health Center No. 2, 2008 - 2008
    • Istanbul Training and Research Hospital 2008 - 2013
    • Gaziosmanpaşa Taksim Training and Research Hospital 2013-2014
    • Istanbul University Cerrahpaşa Faculty of Medicine 2014 - 2017
    • Muş State Hospital 2017 - 2017, transferred to Istanbul due to spousal status.
    • Istanbul Şişli Hamidiye Etfal Training and Research Hospital 2017 - 2020
    • Tansan Private Polyclinic 2020 - ...
  • General Information Regarding Clinical Trials
    • ANNAR 42756493BLC3002
      Advanced Stage Urothelial Cancer and Fibroblast Growth Factor Receptor Gene Aberrations
    • Continue...
Specialist Dr. Ayten CAN
Biochemistry Specialist
  • Education
    • Ataköy High School 1989
    • Istanbul University Cerrahpaşa Faculty of Medicine 2001 / Medical Doctor Training
    • Istanbul University Faculty of Medicine - Biochemistry Department 2009 / Biochemistry Specialization Training
  • Work Experience
    • Istanbul University, Istanbul Faculty of Medicine, 2004 - 2009 Biochemistry Residency
    • Malatya State Hospital, Biochemistry Specialist, 2009-2011
    • Tansan Private Polyclinic 2011 - ... Biochemistry specialist
  • Foreign language
    • English
  • Associations of which he/she is a member
    • Istanbul Chamber of Physicians
    • Turkish Clinical Biochemistry Association
    • Association of Clinical Biochemistry Specialists
NURSES
Semra AYDIN
Head nurse 
Feride KOKU Yılmaz
Nurse
Yeliz ÇEKDEMİR
Nurse 
Abdurrahman Dursun İŞÇİ
Nurse
Duygu ARIKAN
Nurse
Nuran KÜÇÜK
Nurse
Savaş SEFER
Nurse
Neslihan DOGAN
Nurse
Deniz ŞEKER ÇATALKAYA
Nurse
Necmettin AYVAZ
Nurse
LABORATORY TECHNICIANS
Yaren ERTEN
Laboratory Technician
Kadir ADAKLI
Laboratory Technician
PUBLIC RELATIONS
İlknur UZUN
Secretary
Hülya BASMAKÇI
Secretary
SUPPORT STAFF
Huseyin GUL
Employee
Adalet Oğuz
Employee
Mustafa Öylek
Employee
Sevil KIZILIRMAK
Employee
Atilla AÇIKALIN
Employee
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